Question

The process of changing the original text to a scrambled message is known as

Answer 1

Cipher or encryption.

Step-by-step explanation:

Cipher or encryption is the process of turning original text into letters or symbols that others won't understand unless they know the process. The opposite process will be decipher or decryption.

Hope it helps, it is a bit hard to explain. If you want, you can look more into Caesar cipher. It is a well-known way to encrypt text. Furthermore, you can look into the field of cryptography.